People

Shannon Kasley represents companies in multiparty and multi-district commercial and civil litigation, with a focus on the oil-and-gas industry.  As a partner in our Trial and Global Disputes practice, Shannon has also represented clients in a broad range of litigation as well as in civil and criminal matters, in particular antitrust cartel investigations.

Shannon's litigation and investigation matters on behalf of oil-and-gas clients include commercial disputes, fraud claims, antitrust, mass tort and environmental, and challenges to regulatory and administrative actions.  Shannon has represented other clients in disputes ranging from complex mass tort and antitrust matters to qui tam suits alleging violations of the False Claims Act; securities and consumer fraud class actions; breach of fiduciary duty; breach of contract; unjust enrichment; indemnification; tortious interference; and misappropriation of trade secrets claims. With nearly 25 years of experience, Shannon has handled all phases of litigation, appearing on behalf of large national and international companies before numerous state and federal tribunals, administrative bodies and arbitration panels.

In addition, Shannon counsels corporate clients and individuals in civil and criminal investigations conducted by the Department of Justice, the Securities and Exchange Commission, the Internal Revenue Service, the Office of the Comptroller of the Currency, the Federal Bureau of Investigation, and U.S. Army Criminal Investigation Command, as well as by numerous state attorneys general.

In particular, Shannon advises clients in connection with antitrust cartel matters, including internal investigations, leniency applications, and responding to grand jury subpoenas. He also advises boards of directors and executives on antitrust and other litigation exposure risk arising from contemplated transactions.

Full Bio

Credentials

J.D., Seton Hall University School of Law, cum laude

B.A., Mary Washington College, magna cum laude, Phi Beta Kappa

District of Columbia

New Jersey

New York

Supreme Court of the United States

U.S. Court of Appeals for the Third Circuit

U.S. District Court for the District of Columbia

U.S. District Court for the District of New Jersey

Law Clerk, Hon. Garrett E. Brown, Jr., Chief Judge (Ret.), U.S. District Court for the District of New Jersey

American Bar Association, Antitrust Section

NCAA Division III Academic Honor Roll (Men’s Soccer)

Director, Appellate Advocacy Moot Court Board


1996 – 1997

King & Spalding Pro Bono Service Award


2009, 2008

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Recognition

NCAA Division III Academic Honor Roll (Men’s Soccer)

Director, Appellate Advocacy Moot Court Board


1996 – 1997

King & Spalding Pro Bono Service Award


2009, 2008

Matters

Litigation

Lead counsel to an international oil-and-gas company in dozens of California state-court actions by over 30,000 area residents for personal-injury, property-damage, and other claims in connection with a 2012 refinery fire.

Lead counsel to an international oil-and-gas company in a California state-court action by a municipality, including a first-of-its-kind claim for lost property taxes, in connection with a 2012 refinery fire.  Defeated the property-tax and other claims on summary judgment. Law360 highlighted this result in its 2018 Environmental Practice Group of the Year award  

Lead counsel to an international oil and gas company in a lawsuit in the U.S. District Court, District of Maryland, alleging breach of contract, indemnification and other claims concerning remediation of leaks from an underground pipeline near Baltimore’s harbor that the client sold in 1994. Successfully resolved through mediation led by the federal Magistrate Judge.

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Matters

Litigation

Lead counsel to an international oil-and-gas company in dozens of California state-court actions by over 30,000 area residents for personal-injury, property-damage, and other claims in connection with a 2012 refinery fire.

Lead counsel to an international oil-and-gas company in a California state-court action by a municipality, including a first-of-its-kind claim for lost property taxes, in connection with a 2012 refinery fire.  Defeated the property-tax and other claims on summary judgment. Law360 highlighted this result in its 2018 Environmental Practice Group of the Year award  

Lead counsel to an international oil and gas company in a lawsuit in the U.S. District Court, District of Maryland, alleging breach of contract, indemnification and other claims concerning remediation of leaks from an underground pipeline near Baltimore’s harbor that the client sold in 1994. Successfully resolved through mediation led by the federal Magistrate Judge.

Defended one of the world’s largest oil and gas producers in a qui tam suit in the Eastern District of Texas alleging violations of Department of the Interior’s royalty calculation regulations.

With Paul Clement and Jeff Bucholtz, represented an international oil and gas company before the United States Supreme Court.

Obtained dismissal under the Private Securities Litigation Reform Act of a $50 million suit alleging federal and state securities law violations, common law fraud and negligence against the officers and directors of an international construction and engineering company. Defeated plaintiffs’ appeal of the dismissal. See GSC Partners CDO Fund v. Washington, 368 F.3d 228 (3d Cir. 2004).

Antitrust Investigations and Litigation
Represented an applicant in the DOJ Antitrust Division's Corporate Leniency Program and led the nearly two-year internal investigation in connection with the leniency application. The matter was resolved when the Justice Department closed the investigation.

Defended one of the nation’s largest financial institutions in the In re Municipal Derivatives Antitrust Litigation in the Southern District of New York in connection with allegations of price-fixing, bid rigging and customer allocation in the numerous putative class and individual actions and various federal and state investigations. Advised the client, a leniency applicant, with respect to the cooperation and damage-limitation provisions of the Antitrust Criminal Penalties Enhancement and Reform Act of 2004 (ACPERA).

Regulatory and Administrative Litigation
Counseled and advised an international oil and gas company in connection with challenges to the California Air Resources Board's proposed Clean Fuel Outlets regulation, which would have required producers and importers of gasoline in California to offer hydrogen fuel at certain gasoline stations.

Other Government Investigations
Successfully counseled and defended: i) a Department of Defense contractor in connection with civil and criminal investigations involving allegations of procurement fraud, alleged violations of the Foreign Corrupt Practices Act and unauthorized leaks of top-secret information; ii) an international construction and engineering company in connection with an SEC investigation involving allegedly false and misleading statements and studies offered in support of the issuance of municipal bonds; and iii) an international company in connection with a DOJ Antitrust Division civil and criminal investigation involving alleged collusion in the beef-packing industry.

Veteran Pro Bono Litigation
Represented an Air Force National Guard Technical Sergeant and an Army Specialist before the Physical Disability Board of Review. The Technical Sergeant had been medically separated for congestive heart failure with a 10% disability rating, while the Specialist had been separated with a 20% rating following a career-ending training accident in Airborne School. Following written submissions, the PDBR increased the Technical Sergeant’s rating to 60% and the Specialist’s rating to 50%. The PDBR reclassified both as medically retired with retroactive benefits to their severance dates in the early 2000s, including TRICARE medical coverage and other lifetime benefits.

Matters

Litigation

Lead counsel to an international oil-and-gas company in dozens of California state-court actions by over 30,000 area residents for personal-injury, property-damage, and other claims in connection with a 2012 refinery fire.

Lead counsel to an international oil-and-gas company in a California state-court action by a municipality, including a first-of-its-kind claim for lost property taxes, in connection with a 2012 refinery fire.  Defeated the property-tax and other claims on summary judgment. Law360 highlighted this result in its 2018 Environmental Practice Group of the Year award  

Lead counsel to an international oil and gas company in a lawsuit in the U.S. District Court, District of Maryland, alleging breach of contract, indemnification and other claims concerning remediation of leaks from an underground pipeline near Baltimore’s harbor that the client sold in 1994. Successfully resolved through mediation led by the federal Magistrate Judge.

See more
Icon close

Close

Matters

Litigation

Lead counsel to an international oil-and-gas company in dozens of California state-court actions by over 30,000 area residents for personal-injury, property-damage, and other claims in connection with a 2012 refinery fire.

Lead counsel to an international oil-and-gas company in a California state-court action by a municipality, including a first-of-its-kind claim for lost property taxes, in connection with a 2012 refinery fire.  Defeated the property-tax and other claims on summary judgment. Law360 highlighted this result in its 2018 Environmental Practice Group of the Year award  

Lead counsel to an international oil and gas company in a lawsuit in the U.S. District Court, District of Maryland, alleging breach of contract, indemnification and other claims concerning remediation of leaks from an underground pipeline near Baltimore’s harbor that the client sold in 1994. Successfully resolved through mediation led by the federal Magistrate Judge.

Defended one of the world’s largest oil and gas producers in a qui tam suit in the Eastern District of Texas alleging violations of Department of the Interior’s royalty calculation regulations.

With Paul Clement and Jeff Bucholtz, represented an international oil and gas company before the United States Supreme Court.

Obtained dismissal under the Private Securities Litigation Reform Act of a $50 million suit alleging federal and state securities law violations, common law fraud and negligence against the officers and directors of an international construction and engineering company. Defeated plaintiffs’ appeal of the dismissal. See GSC Partners CDO Fund v. Washington, 368 F.3d 228 (3d Cir. 2004).

Antitrust Investigations and Litigation
Represented an applicant in the DOJ Antitrust Division's Corporate Leniency Program and led the nearly two-year internal investigation in connection with the leniency application. The matter was resolved when the Justice Department closed the investigation.

Defended one of the nation’s largest financial institutions in the In re Municipal Derivatives Antitrust Litigation in the Southern District of New York in connection with allegations of price-fixing, bid rigging and customer allocation in the numerous putative class and individual actions and various federal and state investigations. Advised the client, a leniency applicant, with respect to the cooperation and damage-limitation provisions of the Antitrust Criminal Penalties Enhancement and Reform Act of 2004 (ACPERA).

Regulatory and Administrative Litigation
Counseled and advised an international oil and gas company in connection with challenges to the California Air Resources Board's proposed Clean Fuel Outlets regulation, which would have required producers and importers of gasoline in California to offer hydrogen fuel at certain gasoline stations.

Other Government Investigations
Successfully counseled and defended: i) a Department of Defense contractor in connection with civil and criminal investigations involving allegations of procurement fraud, alleged violations of the Foreign Corrupt Practices Act and unauthorized leaks of top-secret information; ii) an international construction and engineering company in connection with an SEC investigation involving allegedly false and misleading statements and studies offered in support of the issuance of municipal bonds; and iii) an international company in connection with a DOJ Antitrust Division civil and criminal investigation involving alleged collusion in the beef-packing industry.

Veteran Pro Bono Litigation
Represented an Air Force National Guard Technical Sergeant and an Army Specialist before the Physical Disability Board of Review. The Technical Sergeant had been medically separated for congestive heart failure with a 10% disability rating, while the Specialist had been separated with a 20% rating following a career-ending training accident in Airborne School. Following written submissions, the PDBR increased the Technical Sergeant’s rating to 60% and the Specialist’s rating to 50%. The PDBR reclassified both as medically retired with retroactive benefits to their severance dates in the early 2000s, including TRICARE medical coverage and other lifetime benefits.

Credentials

J.D., Seton Hall University School of Law, cum laude

B.A., Mary Washington College, magna cum laude, Phi Beta Kappa

District of Columbia

New Jersey

New York

Supreme Court of the United States

U.S. Court of Appeals for the Third Circuit

U.S. District Court for the District of Columbia

U.S. District Court for the District of New Jersey

Law Clerk, Hon. Garrett E. Brown, Jr., Chief Judge (Ret.), U.S. District Court for the District of New Jersey

American Bar Association, Antitrust Section

NCAA Division III Academic Honor Roll (Men’s Soccer)

Director, Appellate Advocacy Moot Court Board


1996 – 1997

King & Spalding Pro Bono Service Award


2009, 2008

Icon close

Close

Recognition

NCAA Division III Academic Honor Roll (Men’s Soccer)

Director, Appellate Advocacy Moot Court Board


1996 – 1997

King & Spalding Pro Bono Service Award


2009, 2008